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Synthesis 1987; 1987(1): 44-45
DOI: 10.1055/s-1987-27836
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α-Substituierte Phosphonate.1 Phosphonoformaldehyd-O,S-acetale bzw. Phosphonoameisensäure-orthoester durch anodische Methoxylierung

B. Costisella* , I. Keitel
  • *Zentralinstitut für Organische Chemie der Akademie der Wissenschaften der DDR, DDR-1199 Berlin-Adlershof, Rudower Chaussee 5, German Democratic Republic
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Publikationsdatum:
20. August 2002 (online)

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O,S-Acetals of Diethoxyphosphinylformaldehyde and Orthoesters of Diethoxyphosphinylformic Acid by Anodic Methoxylation The O,S-acetal of diethoxyphosphinylformaldehyde (6) is prepared from diethylmethylthiomethylphosphonate (3) in 70% yield by electrolysis in CO2-saturated 0.1 molar sodium methoxide/methanol solution. Orthoesters of diethylphosphinylformic acid (8) are synthesized from acetals of the type 7 by anodic methoxylation under the same reaction conditions.